From 5c6d40c18a0ffe05ef2ecf2eb09ad1d0f5e0f017 Mon Sep 17 00:00:00 2001
From: Ari Timonen <arit@fastmail.com>
Date: Fri, 10 Apr 2020 19:58:57 +0300
Subject: [PATCH] Add cleanup function

---
 app/models/concerns/extra.rb | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/app/models/concerns/extra.rb b/app/models/concerns/extra.rb
index b10d692..cfbf43a 100644
--- a/app/models/concerns/extra.rb
+++ b/app/models/concerns/extra.rb
@@ -29,6 +29,14 @@ module Extra
       Sanitize.clean(text.to_s).bbcode_to_html.gsub(/\n|\r\n/, "<br>").html_safe
     end
 
+    def cleanup_string(str, len=20)
+      str = str.gsub(/[^0-9A-Za-z\-_]/, '')
+      if str.length > len
+        str = str.to_s[0, len]
+      end
+      return str
+    end
+
     def move_up(objects, column = "position")
       n = 0
       # the objects need to be assigned before loop or the order is not right